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A spacecraft computer repairable via command.The MULTIPAC is a central data system developed for deep-space probes with the distinctive feature that it may be repaired during flight via command and telemetry links by reprogramming around the failed unit. The computer organization uses pools of identical modules which the program organizes into one or more computers called processors. The interaction of these modules is dynamically controlled by the program rather than hardware. In the event of a failure, new programs are entered which reorganize the central data system with a somewhat reduced total processing capability aboard the spacecraft. Emphasis is placed on the evolution of the system architecture and the final overall system design rather than the specific logic design.
Document ID
19720032907
Document Type
Reprint (Version printed in journal)
Authors
Fimmel, R. O. (NASA Ames Research Center Flight Operations Branch, Moffett Field, Calif., United States)
Baker, T. E. (GTE Laboratories, Inc. Waltham, Mass., United States)
Date Acquired
August 6, 2013
Publication Date
September 1, 1971
Publication Information
Publication: IEEE Transactions on Aerospace and Electronic Systems
Volume: AES-7
Subject Category
COMPUTERS
Funding Number(s)
CONTRACT_GRANT: NAS2-3255
Distribution Limits
Public
Copyright
Other